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Fair Value Measurements (Tables)
 6 Months Ended
Jun. 30, 2019
Derivative Instrument Detail [Abstract]  
Estimated Fair Value of Financial Instruments

The following table presents the estimated fair values of our financial instruments:

 

 

June 30, 2019

 

 

December 31, 2018

 

(in thousands)

 

Carrying

Amount

 

 

Fair

Value

 

 

Carrying

Amount

 

 

Fair

Value

 

Derivative assets related to interest rate swaps (Level 2)

 

$

113

 

 

$

113

 

 

$

1,510

 

 

$

1,510

 

Derivative liabilities related to interest rate swaps (Level 2)

 

$

(21,333

)

 

$

(21,333

)

 

$

(2,888

)

 

$

(2,888

)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Long-term debt, including current portion (Level 2):

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Term loans

 

$

(689,494

)

 

$

(701,935

)

 

$

(539,169

)

 

$

(539,037

)

Senior notes

 

 

—

 

 

 

—

 

 

 

(149,786

)

 

 

(154,328

)

Revenue bonds

 

 

(65,735

)

 

 

(67,819

)

 

 

(94,735

)

 

 

(93,144

)

Medium-term notes

 

 

(3,000

)

 

 

(3,469

)

 

 

(3,000

)

 

 

(3,419

)

Total long-term debt1

 

$

(758,229

)

 

$

(773,223

)

 

$

(786,690

)

 

$

(789,928

)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Company owned life insurance asset (COLI) (Level 3)

 

$

3,671

 

 

$

3,671

 

 

$

3,104

 

 

$

3,104

 

 

1

The carrying amount of long-term debt includes principal and unamortized discounts.